PI-PBC Approach for Voltage Regulation in Cuk Converters with Adaptive Load Estimation
Fecha
2020-11-25Registro en:
O. Montoya, W. Gil-González, A. Garces, F. Serra and J. C. Hernandez, "PI-PBC Approach for Voltage Regulation in Ćuk Converters with Adaptive Load Estimation," 2020 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC), Ixtapa, Mexico, 2020, pp. 1-5, doi: 10.1109/ROPEC50909.2020.9258716.
10.1109/ROPEC50909.2020.9258716
Universidad Tecnológica de Bolívar
Repositorio Universidad Tecnológica de Bolívar
Autor
Montoya, Oscar
Gil-González, Walter
Garcés, Alejandro
Sierra, Federico
Hernandez, J.C.
Resumen
This paper proposes a proportional-integral passivity-based controller (PI-PBC) for supporting voltage in linear loads integrated with Ćuk converters. An adaptive load estimator is also employed to avoid current measurements at the load point. This estimator permits an on-line estimation of the load conductance for maintaining the output voltage as constant as possible independent of its variations. The proposed PI-PBC allows guaranteeing stability conditions in Lyapunov's sense for a closed-loop operation by exploiting the port-Hamiltonian structure of the Ćuk converter model. Numerical simulations evidence the advantages of using PI actions for PBC designs compared with the classical interconnection and damping (IDA-PBC) approach. All numerical simulations are conducted via MATLAB/Simulink software.